79993040 has 40 divisors (see below), whose sum is σ = 195776160. Its totient is φ = 30312576.

The previous prime is 79993033. The next prime is 79993099. The reversal of 79993040 is 4039997.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24794 + ... + 27833.

It is an arithmetic number, because the mean of its divisors is an integer number (4894404).

Almost surely, 2^79993040 is an apocalyptic number.

It is an amenable number.

79993040 is an abundant number, since it is smaller than the sum of its proper divisors (115783120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79993040 is a wasteful number, since it uses less digits than its factorization.

79993040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52659 (or 52653 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 79993040 is about 8943.8828257083. The cubic root of 79993040 is about 430.8744419228.

It can be divided in two parts, 799 and 93040, that added together give a palindrome (93839).

The spelling of 79993040 in words is "seventy-nine million, nine hundred ninety-three thousand, forty".